Theme (Matico Child) contains outdated copies of some WooCommerce template files
Update your theme to the latest version. Any current version, other than that on ThemeForest?/ Update.
Templates
Overrides matico/woocommerce/archive-product.php,
matico/woocommerce/cart/mini-cart.php,
matico/woocommerce/checkout/form-checkout.php,
matico/woocommerce/content-product.php,
matico/woocommerce/content-single-product.php,
matico/woocommerce/content-widget-product.php,
matico/woocommerce/content-widget-reviews.php,
matico/woocommerce/global/quantity-input.php,
matico/woocommerce/loop/loop-end.php,
matico/woocommerce/loop/loop-start.php,
matico/woocommerce/myaccount/form-login.php,
matico/woocommerce/order/form-tracking.php version 3.6.0 is out of date. The core version is 6.5.0,
matico/woocommerce/product-searchform.php,
matico/woocommerce/single-product/add-to-cart/grouped.php,
matico/woocommerce/single-product/meta.php,
matico/woocommerce/single-product/product-image.php,
matico/woocommerce/single-product/rating.php,
matico/woocommerce/single-product/tabs/tabs.php
Outdated templates: Learn how to update